66670780473 has 24 divisors (see below), whose sum is σ = 105093555840. Its totient is φ = 40392468960.

The previous prime is 66670780469. The next prime is 66670780483. The reversal of 66670780473 is 37408707666.

66670780473 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 66670780473 - 2² = 66670780469 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66670780483) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 172240 + ... + 403742.

It is an arithmetic number, because the mean of its divisors is an integer number (4378898160).

Almost surely, 2^66670780473 is an apocalyptic number.

It is an amenable number.

66670780473 is a deficient number, since it is larger than the sum of its proper divisors (38422775367).

66670780473 is a wasteful number, since it uses less digits than its factorization.

66670780473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234429 (or 234426 counting only the distinct ones).

The product of its (nonzero) digits is 7112448, while the sum is 54.

The spelling of 66670780473 in words is "sixty-six billion, six hundred seventy million, seven hundred eighty thousand, four hundred seventy-three".